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1317192C1 Sprocket \u2014 Direct Replacement for Case-IH Combine Grain Handling Systems<\/h2>\n
OEM Part Number:<\/strong> 1317192C1 \u00a0| The 1317192C1 sprocket<\/strong> is a hardened aftermarket replacement for Case-IH combine clean grain auger drives. It fits both the upper and lower clean grain auger positions on eleven combine models in the 1600 and 2000 series, plus the lower auger position on the 1682 and the upper auger on the 2188 and 2388. The 9-tooth, 41.4 mm pitch profile engages the elevator chain with the same geometry as the original, so installation requires no modification to the shaft or housing.<\/p>\n Worn or cracked drive sprockets<\/strong> accelerate chain stretch and increase the risk of grain elevator jams at peak throughput. Replacing this component at the first sign of tooth-tip hooking \u2014 rather than waiting for chain skip \u2014 extends chain service life and avoids unplanned stoppages during harvest. This part is also listed for the Case-IH 2144 Forage Harvester, covering a second machine type from the same SKU.<\/p>\n <\/p>\n <\/p>\n Hardened Tooth Profile<\/p>\n Teeth are heat-treated after hobbing, producing a hard wear surface over a tough core. This resists the cyclic impact loads typical of grain elevator duty, where chain tension spikes each time a loaded flight engages the conveyor sprocket<\/strong>.<\/p>\n<\/div>\n Precision Key-Slot Machining<\/p>\n The 4 \u00d7 8 \u00d7 57 mm keyway is broached to tolerance after bore machining, keeping the sprocket concentric on the 1-1\/4\u2033 shaft. Shaft runout caused by a sloppy keyway fit is a common source of premature chain wear that this process eliminates.<\/p>\n<\/div>\n 41.4 mm Pitch Accuracy<\/p>\n Pitch is held within tight CNC hobbing tolerances across all 9 teeth. Mismatched pitch between a replacement sprocket and a used chain is the fastest route to accelerated wear \u2014 a dimension-verified part prevents this.<\/p>\n<\/div>\n Corrosion-Resistant Outer Coating<\/p>\n The outer surface carries a protective coating that resists oxidation during off-season storage. Grain dust mixed with moisture is highly corrosive to bare steel \u2014 the coating keeps surface pitting from spreading to functional tooth faces.<\/p>\n<\/div>\n OEM Quality Sprocket for Case-IH Aftermarket Parts<\/p>\n Every unit is dimensionally verified against the 1317192C1 drawing before dispatch. Bore, pitch, outer diameter, and key-slot dimensions are checked as a set \u2014 not sampled \u2014 ensuring no out-of-tolerance parts reach the field.<\/p>\n<\/div>\n Dual-Position Fitment<\/p>\n One part number covers both upper and lower auger positions on most listed models, simplifying procurement. Stocking a single SKU reduces parts-room complexity for dealers and fleet operators servicing mixed Case-IH fleets.<\/p>\n<\/div>\n<\/div>\n <\/p>\n Confirm your model below before ordering. Position fitment (upper auger, lower auger, or both) varies by model as noted.<\/p>\n Model not listed? Send your machine serial number and we will cross-reference it against the 1317192C1 specification within one business day.<\/p>\n The clean grain elevator is one of the highest-duty chain drives on a combine. At full capacity, the elevator chain runs continuously under variable load as the clean grain volume fluctuates. A drive sprocket<\/strong> with worn teeth or a loose bore fit allows chain pitch to drift, which eventually causes the chain to ride over tooth tips rather than seating in the root \u2014 a condition that generates heat, accelerates wear on both parts, and risks a complete chain break.<\/p>\n <\/p>\n Q1: Does this sprocket fit both the upper and lower clean grain auger on all listed models?<\/p>\n Not on every model. It fits both positions on the 1640\u20132366 series, lower only on the 1682, and upper only on the 2188 and 2388. Check the compatibility table above for your specific model before ordering.<\/p>\n<\/div>\n Q2: Is this an OEM quality sprocket for Case-IH aftermarket use?<\/p>\n Yes. The part matches the 1317192C1 drawing on all key dimensions \u2014 9 teeth, 41.4 mm pitch, 35 mm bore, 4\u00d78\u00d757 mm keyway \u2014 and receives the same hardening process as the original.<\/p>\n<\/div>\n Q3: Should I replace the elevator chain at the same time?<\/p>\n Strongly recommended. Installing a new sprocket on a worn chain causes accelerated re-wear on the new part. We supply matching elevator chains \u2014 contact us with your chain pitch and strand count for a paired quote.<\/p>\n<\/div>\n Q4: What cross-reference numbers does this part cover?<\/p>\n This unit replaces OEM numbers 1317192C1, A-1317192C1, SP122, and SP122H. If your parts catalogue lists any of these, this is the correct replacement.<\/p>\n<\/div>\n Q5: How do I know when the conveyor sprocket needs replacing?<\/p>\n Inspect tooth tips for a hooked or sharpened profile, check for visible wear grooves on flanks, and listen for chain skip under load. Any one of these signs indicates the sprocket should be replaced at the next scheduled maintenance window.<\/p>\n<\/div>\n<\/div>\n <\/p>\n A grain elevator sprocket works as part of a complete chain drive assembly. The components below are typically ordered or replaced at the same service interval:<\/p>\n Clean Grain Elevator Chain<\/p>\n 41.4 mm pitch roller chain for Case-IH elevator assemblies. Replace chain and sprocket together to avoid uneven contact wear.<\/p>\n<\/div>\n PTO Drive Shaft<\/p>\n Telescoping PTO shafts with overrun clutch protection for combine and header power take-off connections.<\/p>\n<\/div>\n Idler Sprockets<\/p>\n Matching idler sprockets for the same elevator chain loop, available in the same material and coating specifications.<\/p>\n<\/div>\n \n<\/div>\n<\/div>\n <\/p>\n Ready to Order? Need a Bulk Quote or Custom Spec?<\/p>\n Send us your Case-IH model number, required quantity, and any custom specifications. We confirm price and availability within one business day.<\/p>\n We also supply a full range of agricultural and industrial components \u2014
\nCross Ref:<\/strong> A-1317192C1 \/ SP122 \/ SP122H \u00a0|
\nTeeth:<\/strong> 9 \u00a0|
\nShaft:<\/strong> 1-1\/4\u2033 (35 mm bore) \u00a0|
\nWeight:<\/strong> 1.5 kg<\/p>\nTechnical Specifications of 1317192C1 Sprocket for Case-IH<\/h2>\n
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\n \nParameter<\/th>\n Unit<\/th>\n Value<\/th>\n<\/tr>\n<\/thead>\n \n OEM Part Number<\/td>\n \u2014<\/td>\n 1317192C1 (also: A-1317192C1, SP122, SP122H)<\/td>\n<\/tr>\n \n Number of Teeth (Z)<\/td>\n \u2014<\/td>\n 9<\/td>\n<\/tr>\n \n Pitch (p)<\/td>\n mm<\/td>\n 41.4<\/td>\n<\/tr>\n \n Inner Diameter (d) \/ Shaft Size<\/td>\n mm \/ inch<\/td>\n 35 mm \/ 1-1\/4\u2033<\/td>\n<\/tr>\n \n Outer Diameter (D)<\/td>\n mm<\/td>\n 132<\/td>\n<\/tr>\n \n Outside Hub Diameter (D1)<\/td>\n mm<\/td>\n 50<\/td>\n<\/tr>\n \n Height (H)<\/td>\n mm<\/td>\n 57<\/td>\n<\/tr>\n \n Key Slot<\/td>\n mm<\/td>\n 4 \u00d7 8 \u00d7 57<\/td>\n<\/tr>\n \n Weight (W)<\/td>\n kg<\/td>\n 1.5<\/td>\n<\/tr>\n \n Hardness<\/td>\n \u2014<\/td>\n Teeth hardened (HRC selectable)<\/td>\n<\/tr>\n \n Surface Coating<\/td>\n \u2014<\/td>\n Anti-corrosion coating applied to outer surfaces<\/td>\n<\/tr>\n \n Application Position<\/td>\n \u2014<\/td>\n Upper & Lower Clean Grain Auger \/ Lower Clean Grain Auger \/ Upper Clean Grain Auger (model-dependent)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n Key Features of This Replacement Drive Sprocket<\/h2>\n
Compatibility: Fits Your Case-IH Combine Models<\/h2>\n
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\n \nModel<\/th>\n Application Position<\/th>\n Machine Type<\/th>\n<\/tr>\n<\/thead>\n \n 1640, 1644, 1660, 1666, 1670, 1680, 1688<\/td>\n Upper & Lower Clean Grain Auger<\/td>\n Case-IH Combine<\/td>\n<\/tr>\n \n 2144, 2166, 2344, 2366<\/td>\n Upper & Lower Clean Grain Auger<\/td>\n Case-IH Combine<\/td>\n<\/tr>\n \n 1682<\/td>\n Lower Clean Grain Auger only<\/td>\n Case-IH Combine<\/td>\n<\/tr>\n \n 2188, 2388<\/td>\n Upper Clean Grain Auger only<\/td>\n Case-IH Combine<\/td>\n<\/tr>\n \n 2144<\/td>\n \u2014<\/td>\n Case-IH Forage Harvester<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n ![\"Superior](\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/06\/Superior-Performance-in-Grain-Handling-Applications-1024x559.webp\" "\\"\\"")
<\/p>\nSuperior Performance in Grain Handling Applications<\/h2>\n
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Frequently Asked Questions<\/h2>\n
Frequently Paired Products<\/h2>\n
\nAgricultural Gearboxes<\/strong><\/a>,
\nHydraulic Cylinders<\/strong><\/a>,
\nPTO Shafts<\/strong>,and
\nDrive Sprockets<\/strong> for all major combine brands \u2014
\nall available for direct export with B2B volume pricing.<\/p>\n